Smart list that tracks amount of soft bounces
I need to make a smart list that tracks the amount of times something has been soft bounced. I'd like to make a rule that if and email is, for example, soft bounced 4 times or more, that it is moved to a review list to be potentially marked invalid or corrected.
1. Is there a filter that will allow me to track that?
2. Does anyone have any suggestions as to how I should structure such a rule?